Joanna began her career in action fare such as Steve McQueen's thriller Bullitt, the Jason Robards drama Fools, The Laughing Policeman starring Walter Matthau and The Outfit with Robert Duvall. Her first co-starring role came opposite George C. Scott in the offbeat comedy caper The Bank Shot. Television became an important medium for her in the late 1970s, with guest parts on all the popular shows of the time, including Dallas. Trapper John, M.D., Taxi, Starsky and Hutch, Charlie's Angels, Lou Grant and a recurring role on Falcon Crest. Joanna languished in three failed series attempts--The Roller Girls, 240-Robert and The Family Tree--before hitting the jackpot with the sitcom Buffalo Bill opposite Dabney Coleman. The 1980s also brought about positive, critical reception for Joanna on film as well, especially in a number of showy portrayals, notably her snake-dancing replicant in the futuristic sci-fi thriller Blade Runner, her radio journalist involved with Nick Nolte and Ed Harris in the political drama Under Fire and her co-starring role in a wacky triangle with Bob Hoskins and a hyperkinetic hare in the highly ambitious part toon/part fantasy film Who Framed Roger Rabbit. Back on the TV front she was seen in recurring roles on L.A. Law, Diagnosis Murder, The District and Boston Legal. Since then Joanna has juggled a number of quality film and TV assignments, including her Emmy-nominated recurring role as a quirky, capricious mother/psychiatrist in Six Feet Under.

Joanna currently stars in the movie Killing Faith opposite Guy Pierce and Bill Pullman.

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